From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maciej Rutecki Subject: Re: 2.6.37 regression: adding main interface to a bridge breaks vlan interface RX Date: Sun, 23 Jan 2011 18:45:20 +0100 Message-ID: <201101231845.20505.maciej.rutecki@gmail.com> References: <4D32FC1C.3010905@simon.arlott.org.uk> Reply-To: maciej.rutecki@gmail.com Mime-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: netdev , Linux Kernel Mailing List , jesse@nicira.com To: Simon Arlott Return-path: In-Reply-To: <4D32FC1C.3010905@simon.arlott.org.uk> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org I created a Bugzilla entry at https://bugzilla.kernel.org/show_bug.cgi?id=27432 for your bug report, please add your address to the CC list in there, thanks! On niedziela, 16 stycznia 2011 o 15:09:32 Simon Arlott wrote: > [ 1.666706] forcedeth 0000:00:08.0: ifname eth0, PHY OUI 0x5043 @ 16, > addr 00:e0:81:4d:2b:ec [ 1.666767] forcedeth 0000:00:08.0: highdma csum > vlan pwrctl mgmt gbit lnktim msi desc-v3 > > I have eth0 and eth0.3840 which works until I add eth0 to a bridge. > While eth0 is in a bridge (the bridge device is up), eth0.3840 is unable > to receive packets. Using tcpdump on eth0 shows the packets being > received with a VLAN tag but they don't appear on eth0.3840. They appear > with the VLAN tag on the bridge interface. > > If I remove eth0 from the bridge, eth0.3840 starts working again. It > still works if eth0.3840 is part of a bridge but eth0 isn't (the device > is in promiscuous mode). I've only tested with broadcast traffic. > > This works with 2.6.36. > > git bisect produces 3701e51382a026cba10c60b03efabe534fba4ca4 as the > first bad commit. > > The behaviour of drivers/net/forcedeth.c nv_rx_process_optimized looks > ok - vlan_gro_receive and napi_gro_receive are called correctly. (The > likely(!np->vlangrp) looks odd as it'll always be false if vlans are in > use). -- Maciej Rutecki http://www.maciek.unixy.pl